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Lens Option 5: Throw Distance 3.60 - 5.70 x Width of Screen
When only Vertical or only Horizontal Shift is used:
Maximum. Vertical Shift = 85% of screen height (.85 x height)
Maximum Horizontal Shift = 40% of screen width (.4 x width)
Amount of Horizontal Shift when Vertical is @ maximum:
Maximum Horizontal Shift = 5% of screen width (.05 x width)
Amount of Vertical Shift when Horizontal is @ maximum:
Maximum Vertical Shift = 10% of screen height (.10 x height)
Explanation:
•
0% shift is when the image center is even with the projector lens center - also known
as zero-degree projection-angle
•
Shifting beyond the maximum values above will cause image loss in corners or edges
•
When Vertical Shift is maximum, Horizontal shift can only be adjusted 7% left or right
in example above
•
The maximum diagonal movement of the image is expressed as shift in 2 directions,
this is the maximum combination of adjustment (ex. Up & Left, Down & Right, Up &
Right, Down & Left)
•
Throw distance does not affect image quality
•
Lens shift does not affect image quality if within above limits
Lens Option 6: Throw Distance 0.67 Fixed x Width of Screen
When only Vertical or only Horizontal Shift is used:
Maximum. Vertical Shift = 15% of screen height (.15 x height)
Maximum Horizontal Shift = 10% of screen width (.1 x width)
Amount of Horizontal Shift when Vertical is @ maximum:
Maximum Horizontal Shift = 5% of screen width (.05 x width)
Amount of Vertical Shift when Horizontal is @ maximum:
Maximum Vertical Shift = 10% of screen height (.10 x height)
Explanation:
•
0% shift is when the image center is even with the projector lens center - also known
as zero-degree projection-angle
•
Shifting beyond the maximum values above will cause image loss in corners or edges
•
When Vertical Shift is maximum, Horizontal shift can only be adjusted 7% left or right
in example above
•
The maximum diagonal movement of the image is expressed as shift in 2 directions,
this is the maximum combination of adjustment (ex. Up & Left, Down & Right, Up &
Right, Down & Left)
•
Throw distance does not affect image quality
•
Lens shift does not affect image quality if within above limits
14
Example: 56" x 100" Screen
TD = 360" to 570" lens to screen
0.85 X 56" = 47.6" up or down
0.40 X 100" = 40.0" left or right
0.05 X 100" = 5.0" left or right
0.10 X 56" = 5.6" up or down
71% or 71"
71% or 71"
Normal Projection Position
Example: 56" x 100" Screen
TD = 8" lens to screen
0.15 X 56" = 8.4" up or down
0.1 X 100" = 10.0" left or right
0.05 X 100" = 5.0" left or right
0.10 X 56" = 5.6" up or down
71% or 71"
71% or 71"
Normal Projection Position
120% or 67.2"
120% or 67.2"
120% or 67.2"
120% or 67.2"
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